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` 2 Sheets-Sheet 1. G. BRI-NCKMAN 8v F. WIBDERHOL'DT. PILTEBI.

(No. Model.)

Patented Dec. 3, 1895.

@va/"payday ANDREW E.GERMAN,PHUTOUHIQWASNINGTMD (No Model.) v2Sheets-Sheet '2.

' G. BRINGKMAN 8v I'. WIEDBRHOLDT.

` FILTER. A

No. 550,583. Patented D55. s, 1895.

@a mwl) IINITED STATES ArENI rrIcE.

GEORGE RRINOKMAN AND FERDINAND wIEDERI-IOLDT, or sr. LOUIS, MISSOURI,AssIGNoRs oE'ONE-EoURrI-I rro BERTI-IA RRINOKMAN, or SAME PLAGE; SAIDGEORGE RRINOIUIAN ASSIGNOR OE oNE-EIGI-rrn TO SAID NVIEDERIIOLDT.

FlLTER. il

SPECIFICATION forming part of Letters Patent No. 550,583, dated December3, 18195.

Application filed April 6, 1894. Serial No. 506,612. (No model.)

To @ZZ whom it' may concern;

Be it known that we, GEORGE BRINCKMAN, a subject of the Emperor ofGermany, and FERDINAND VIEDERHOLDT, a citizen of the United States,residing at the city of St. Louis, State of Missouri, have invented acertain new and useful Improvement in Filters, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification, wherein likeletters of reference refer to like parts, and in which- ,Figure l is asectional view of our improved filter, and Fig. 2 is a detail view ofthe filtering material and its supporting-frame.

O ur invention relates to a new and useful improvement in filters; andit consists, generally Stated, in arranging the same in the length of apipe, thus enabling the water or otherfluid to pass through the casingwithout being filtered, which is desirable in some cases, and inlocating to the side or sides of said straightway suitable filteringmaterial through which the Water or other fluid may percolate underpressure and be received into a chamber located beyond, from which itInay be drawn.

Another feature resides in the peculiar construction and arrangement ofthe filtering material in a frame, whereby a large filtering-surface maybe obtained by arranging side by side filtering-stones of such thicknessas will enable the water to percolate through them readily.

Other minor features of invention reside in the peculiar construction,arrangement, and combination of the parts, all as will hereinafter bemore fully described, and afterward pointed out in the claim.

In the drawings, A indicates a casing,which may be of any suitable sizeand shape, at the end of which are arranged caps or end walls B.Extending into the top of the casing is an inlet-pipe, which terminatesin a nozzle C, which nozzle is preferably perforated, as shown, todirect the inflowing water against the filtering-surface.

The pipe D leads from the bottom of the casing, in which pipe ispreferably mounted a stop-cock E.

The filtering material is preferablyT formed in separate sections orslabs, which are cemented or otherwise received into a suitableframework G. This framework, as shown, is preferably made of L and Tbeams, against the iianges of which rest the filtering-slabs F, whilebetween the filtering slabs and the webs of the frame is received asuitable cementing material for holding the filteringslab in place.

In order to resist'the pressure of the water whichwould have a tendencyto bulge the iiltering-slabs at their middle, we secure to the outerface of the frame and filtering Inaterial the perforated plate H, whichmay be made of one or more pieces, as desired.

The operationof the device is as follows: The water flowing in at pipeC, assuming that stop-cock E is closed, will iill the chamber I betweenthe filtering material and percolate through said filtering materialinto the chambers J, whence it Inay be drawn through pipes L, or it Inayflow from chambers J into some suitable receptacle or reservoir. (Notshown.) If it is desired to get an uninterrupted but unfiltered flow ofwater through the pipe D, stop-cock E is turned so as to open said pipe,which will empty chamber I, and the Water flowing through the nozzle Cwill be directed against the filtering-surface, so as to cleanse thesame, whence it will flow through pipe D.

l/Ve are aware that many minor changes in the construction, arrangement,and combination of the parts of our device can be made and substitutedfor those herein shown and described without in the least departing fromthe nature and principle of our invention.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-n In a filter, the combination 'with a casinghaving an inlet pipe opening into its upper end, and an Outlet pipeleading from its lower spidereframes mounted in the ends of thesignatures, in presence of two Witnesses, this casing, iltering materialwhich is cemented 3d day of April, 1894. in said frames, perforatedplates arranged on GEORGE BRINCKMAN the outer faces of the ilterinomaterial and A 5 caps on the ends of the Cashing, which 3form FERDINANDVIEDERHOLD P' chambers for the filtered fluid; substantially Vitnesses:as described. F. R. CORNWALL,

In testimony whereof We hereunto aliix our HUGH K. YVAGNER.

